Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
toan tap » toan ban
tang va » trang va, tang van, thang va
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((dieu hanh) OR (chieu xanh)) - hanh tang va dung cong hach toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((dieu hanh) OR (chieu xanh)) - hanh tang va dung cong hach toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((dieu hanh) OR (chieu xanh)) - hanh tang va dung cong hach toan tap*.